Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Northwest Molded molds plastic handles which cost $0.70 per handle to mold. The fixed cost to run the molding machine is $6693 per week. If the company sells the handles for $3.70 each, how many handles must be molded weekly to break even? (Assume that there are no unsold handles at the end of the week.)
A. 1521 handles B. 1487 handles C. 2231 handles D. 9561 handles
Use the graph of a known basic function and a combination of horizontal shifts, reflections, and vertical shifts to sketch the function.y = -
- 3
A. 
B. 
C. 
D. 
Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. This situation is now represented by the polar graph in the figure shown below. Each point (r, ?) on the graph gives the sailing speed, r, in knots, at an angle ? to the 10-knot wind. What is the speed to the nearest knot, of the sailboat sailing at 30° angle to the wind? 
A. 3 knots B. 5 knots C. 2 knots D. 4 knots
Solve the problem.A communication signal can be transmitted from station A to one of four switching offices, after which it is sent to one of 10 possible repeaters and delivered to station B. How many different ways are there to send the signal from A to B?
Fill in the blank(s) with the appropriate word(s).